Smoke-consuming furnace.



No. 662,102. Patented Nov. 20, [900.

J. SLATER.

SMOKE GONSUMING FURNACE.

{Application filed Mar. 28. 1900.

Inventor:

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ilNiTnn STATES PATENT Gr mes.

JAMES SLATER, OF PITTSBURG, PENNSYLVANIA.

SMOKE-CONSUMlNG FURNACE.

SPECIFICATION forming part of Letters PatentNo. 662,102, dated November 20, 1900.

Application filed March 28, 1900 derial No. 10,442 \No model.)

To all whom it may concern:

Be it known that I, JAMES SLATER, a resident of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Smoke-Consuming Furnaces; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to smoke-consuming furnaces, and has for its object to provide a cheap and simple device for consuming the smoke in furnaces, as well as one which can be easily and conveniently applied to any approved form of furnace, without the necessity of materially changing the construction of said furnace to any great degree.

My invention consists, generally stated, in the novelarrangement,construction,and combination of parts, as hereinafter more specifically set forth and described, and particularly pointed out in the claim.

To enable others skilled in the art to which my invention appertains to construct and. use the furnace, I will describe the same more fully, referring to the accompanying drawings, in which Figure 1 is a longitudinal section of a boilerfurnace, showing my invention applied thereto; and Fig. 2 is a horizontal section of the same on the line 2 2, Fig. 1.

Like figures of reference indicate like parts in each of the views of the drawings.

1 represents the furnace, which has the boiler 2 therein of any approved construction and inolosed in the ordinary manner,while below the same and at the front end thereofis the fire-chamber 3, which has the charging-opening 1 communicating therewith through the front wall 5 of the furnace and closed by a door 6. Supported in any desired manner within the fire-chamber 3 are the grate-bars 7, which are of any approved construction, and below the same is the ash-pit 8, having an opening 9 communicating therewith through the front wall 5. A bridge-wall 10 extends up in the rear of the fire-chain her 3 and gratebars 7, so as to form a combustion-chamber 11 in the rear of the same,and a fine 12 is formed between the top of the bridge-wall and the boiler 2 for the passage of the products of combustion from the fire-chamber 3 to the heating or combustion chamber 11. Extend ing through the bridgewall 10 below the grate-bars 7 are the air-flues 13, which com municate with the ash-pit 8 and with an air= chamber 14, located in the rear of the bridgewall 10 and between it and an inclined wall 15, which extends upwardly at an angle toward the top of the bridge-wall 10, but does not reach the same, leaving a flue 16 between the top of the bridge-wall 10 and the top of the inclined wall 15. A wall 17, formed of a series of checker-work, extends up within the combustion-chamber 11, at the rear of the same, and boiler 2 for the passage of the waste products of combustion to the stack or chimney. A series of air-flues 18 are formed in the side walls 5 of the furnace, said flues leading from the ash-pit 8 under the grate-bars 7 and communicating with the fire-chamber 3 under the boiler 2. An air-flue 19 is formed in the front wall 5 of the furnace, which flue leads from the ash-pit 8 and communicates with the charging-opening 4:.

The use and operation of my improved smoke-consuming furnace are as follows: The coal or other fuel is charged into the firechamber 3 through the opening 4: onto the grate-bars 7, and the same being ignited the products of combustion or smoke as they rise from such fuel will be consumed or partially consumed by the hot air ejected into the tirechamber 3 through the air-flues 18 and 19, said air being fed to said flues 18 and 19 from the ash-pit 8 under the grate-bars 7, and any unconsumed smoke or products .of combustion will pass from the fire-chamber 3 through the flue 12 between the top of the bridge-wall 10 and boiler 2, where they will be met and burned or consumed by the hot air passing through the opening 16 from the air-chamber 14:, said hot air being supplied to the chamber 14 from the ash-pit 8 through the flues 13 in the bridge-wall 10 below the grate-bars 7. The heated air and products of combustion from the fire-chamber 3 after passing through the fine 12 and over the hotair opening 16 will pass down over the inclined wall into the heating or combustion chamber 11 under the boiler 2 and from thence will be drawn against'and through the checker-workwall 17 at the rear of the boiler 2 by the draft of the chimney or stack, checkerwork retarding their exit from the furnace into the stack.

It will thus be seen that my improved smoke-consuming furnace is cheap and simple in its construction and operation, and practical experience with such form of furnace has proved that the smoke will be entirely burned or consumed therein. The device can be applied to any form of furnace and will afiord a great saving infuel, as well as overcoming the harmful and injurious effeet to persons and objects by the smoke escaping into the atmosphere.

Various modifications in the construction and design of the various parts of the device may be resorted to without departing from the spirit of the invention or sacrificing any of its advantages.

What 1 claim as my invention, and desire to secure by Letters Patent, is-- In a boiler-furnace, a ehargingopening extending through the front wall of the furnace; at fire-chamber beyond the charging-opening;

a bridge-wallbaek of the fire-chamber aheating-chamber in the rear of said bridge-wall; a wall extending from the floor of said heating-chainber and inclining sharply forward toward the bridge-wall and terminating so as to leave an air-passage between the top of the bridge-wall and the top of said inclined Wall; a hot-air flue or fines leading from the ash-pit and opening into the side wall of said charging-opening; hot-air flues also leading from the ash-pit and opening into the firechamber at about the level of the top of the bridge-wall; and hotair flue or fines leading from the ash-pit through the bridge-wall and opening into the chamber formed between the bridge-wall and the inclined well back of it; and a checker-work wall at the rear end of the heating-chamber.

-In testimony whereof I, the said JAMES SLATER, have hereunto set my hand.

JAMES SLATER. Witnesses:

J. N. Comm, J os. L. TREFALLER. 

